<?php

/** 
 * @version V4.93 10 Oct 2006 (c) 2000-2010 John Lim (jlim#natsoft.com). All rights reserved.
 * Released under both BSD license and Lesser GPL library license. 
 * Whenever there is any discrepancy between the two licenses, 
 * the BSD license will take precedence. 
 *
 * Code to export recordsets in several formats:
 *
 * AS VARIABLE
 * $s = rs2csv($rs); # comma-separated values
 * $s = rs2tab($rs); # tab delimited
 * 
 * TO A FILE
 * $f = fopen($path,'w');
 * rs2csvfile($rs,$f);
 * fclose($f);
 *
 * TO STDOUT
 * rs2csvout($rs);
 */
 
// returns a recordset as a csv string
function rs2csv(&$rs,$addtitles=true)
{
    return _adodb_export($rs,',',',',false,$addtitles);
}

// writes recordset to csv file 
function rs2csvfile(&$rs,$fp,$addtitles=true)
{
    _adodb_export($rs,',',',',$fp,$addtitles);
}

// write recordset as csv string to stdout
function rs2csvout(&$rs,$addtitles=true)
{
    $fp = fopen('php://stdout','wb');
    _adodb_export($rs,',',',',true,$addtitles);
    fclose($fp);
}

function rs2tab(&$rs,$addtitles=true)
{
    return _adodb_export($rs,"\t",',',false,$addtitles);
}

// to file pointer
function rs2tabfile(&$rs,$fp,$addtitles=true)
{
    _adodb_export($rs,"\t",',',$fp,$addtitles);
}

// to stdout
function rs2tabout(&$rs,$addtitles=true)
{
    $fp = fopen('php://stdout','wb');
    _adodb_export($rs,"\t",' ',true,$addtitles);
    if ($fp) fclose($fp);
}

function _adodb_export(&$rs,$sep,$sepreplace,$fp=false,$addtitles=true,$quote = '"',$escquote = '"',$replaceNewLine = ' ')
{
    if (!$rs) return '';
    //----------
    // CONSTANTS
    $NEWLINE = "\r\n";
    $BUFLINES = 100;
    $escquotequote = $escquote.$quote;
    $s = '';
    
    if ($addtitles) {
        $fieldTypes = $rs->FieldTypesArray();
        reset($fieldTypes);
        $i = 0;
        while(list(,$o) = each($fieldTypes)) {
        
            $v = ($o) ? $o->name : 'Field'.($i++);
            if ($escquote) $v = str_replace($quote,$escquotequote,$v);
            $v = strip_tags(str_replace("\n", $replaceNewLine, str_replace("\r\n",$replaceNewLine,str_replace($sep,$sepreplace,$v))));
            $elements[] = $v;
            
        }
        $s .= implode($sep, $elements).$NEWLINE;
    }
    $hasNumIndex = isset($rs->fields[0]);
    
    $line = 0;
    $max = $rs->FieldCount();
    
    while (!$rs->EOF) {
        $elements = array();
        $i = 0;
        
        if ($hasNumIndex) {
            for ($j=0; $j < $max; $j++) {
                $v = $rs->fields[$j];
                if (!is_object($v)) $v = trim($v);
                else $v = 'Object';
                if ($escquote) $v = str_replace($quote,$escquotequote,$v);
                $v = strip_tags(str_replace("\n", $replaceNewLine, str_replace("\r\n",$replaceNewLine,str_replace($sep,$sepreplace,$v))));
                
                if (strpos($v,$sep) !== false || strpos($v,$quote) !== false) $elements[] = "$quote$v$quote";
                else $elements[] = $v;
            }
        } else { // ASSOCIATIVE ARRAY
            foreach($rs->fields as $v) {
                if ($escquote) $v = str_replace($quote,$escquotequote,trim($v));
                $v = strip_tags(str_replace("\n", $replaceNewLine, str_replace("\r\n",$replaceNewLine,str_replace($sep,$sepreplace,$v))));
                
                if (strpos($v,$sep) !== false || strpos($v,$quote) !== false) $elements[] = "$quote$v$quote";
                else $elements[] = $v;
            }
        }
        $s .= implode($sep, $elements).$NEWLINE;
        $rs->MoveNext();
        $line += 1;
        if ($fp && ($line % $BUFLINES) == 0) {
            if ($fp === true) echo $s;
            else fwrite($fp,$s);
            $s = '';
        }
    }
    
    if ($fp) {
        if ($fp === true) echo $s;
        else fwrite($fp,$s);
        $s = '';
    }
    
    return $s;
}
?>